Oil-burner.



W. H. LEGG.

0H. BURNER.

APPLICATION FILED MAY 10, 1918.

1, 296,822 vPatented Mar. 11, 1919.

drical. formed in two parts 3' and 3 divided on a WILLIAM HENRY LEGG, 0F TORONTO, ONTARIO, CANADA.

OIL-BURNER.

messes.

Specification of Letters Patent. Patented Mai, if, 3939.

Application filed may 10, 1918. Serial No. 233,738.

To all whom it may concern:

Be it known that 1, WILLIAM HENRY Luce, of the city of Toronto, in the county of York, in the hrovince of Ontario, Canada, have invented certain new and useful Improvements in Oil-Burners, of which the following is the specification.

My invention relates to improvements in oil burners, and the object of the invention is to devise a burner in which there will be no carbonization of pipes; in which there will be an increased forced draft producing an increased fire, in which the consumption of oil will be automatically regulated there- Which there will be no wastage of oil and it consists essentially of the following arrangement and construction of parts as hereinafter more particularly explained.

Figure 1, is a sectional View through a portion of a furnace showing my burnerin position and means for regulating the same.

Fig. 2, is a perspective view of my burner.

Fig.3, is an enlarged sectional detail of the oil feed.

In the drawings like characters of reference indicate corresponding parts in thevarious figures.

1 indicates a portion of a furnace, 1 being the furnace door opening and 1 the ash pit door opening. .3 indicates my burner which comprises a casing 3", the front portion being substantially rectangular in form and the rear or outer portion being semi-cylin- The rear portion is preferably line 3 ,'the poitionsB' and 3 being hinged together at 3. The free end of the divided portion 3 is connected to the stationary portion by suitable swinging catches 3 3 indicate circular openings formed in the end walls of the casing. 3 indicate a series of perforations formed in the upper outer portion of the casing through which ,air is supplied to the interior. 3 indicates a guideway in which is held a slide plate 3 adapted to close one or more of the openings 3 so as to regulate the amount of air supplied. 3 indicates a series of orifices formed in the bottom of the casing and adapted to supply cold air into the bottom so as to prevent the heat of the flame passing around to the outer portion ofthe casing.

The size of the openings 3 is also regulated by a slide plate 3 held in guideways similar to the guideways 3 ,by economizing such consumption, and in- The casing 3 is of such a size as to fit snugly within the fire door opening l of the furnace. The front wall 8 isprovided with an opening 3 facing into the interior of the furnace.

4: indicates a shaft mounted on hearings 4* and 4 carried by standards 4 and 4: lo

cated at the outside of the furnace. F indicates a frame which is preferably connected to the standard 4: and on which is mounted a motor 5. 5 indicates the motor shaft, 5" a worm mounted upon the motor shaft and 5 a worm gear mounted upon the'shaft and with which the worm 5 engages and whereby the shaft 4 is rotated.

-6 indicates a fan which is secured to the shaft 4, the fan revolvin in the direction indicated by arrow (see Flg. 1) The blades 6 of the fan 6 preferably curve backward as indicated. 7 indicates a shelf which is formed by an extension of the bottom wall of the casing 3, the center portion of the shelf being provided with a V-shaped depression 7, such. depression inclining from each side toward the central line 7 leading to the dripping orifice 7 The sides of the V-shaped depression extend from each side of the opening 3. 8 indicates a shield which is secured as indicated in Fig. 1 to the upper wall of 8 extends horizontally forward and curves down at 8 in semi-circular form, the lower edge of such curved portion approaching into close proximity with the lower edge of the shelf 7.

9 indicates an upwardly extending cross rib extending across the bottom of the opening 3. The rib 9 is substantially triangular in cross section, the outer face being curved concentrically to the center of the shaft 4:. The bottom of the casing 3 inclines downwardly slightly toward such cross rib, thecenter of the rib being provided with an orifice 9 through which any oil which gathers upon the bottom of the casing flows into the depression 7 X so as to pass the dripping orifice 7 10 indicates a pan which is located beneath the shelf 7 and is designed to receive the oil dripping therefrom. The pan 10 is supported upon a discharge pipe 11 provided with a hea dll having perforations 11 through which the oil passes from the pan 10 into the pipe 11, the pipe 11 passing downwardly and outwardly through the ash pit door opening 1' to a suitable receptacle 85 the casing 3. The shield from which oil may be returned to the source of supply.

12 indicates a gas pilot pipe which is provided with a right anguiar extension l2 extending across the shelf 7 and suitably perforated. 14' indicates an air pipe surrounding the perforated portion 12 of the pipe 12 and provided with a flame orifice 12 The flame from the'orifice 12 is proje'cted against the curved portion 8 0f the shield 8 passing upwardly around such curved portion as indicated in Fig. 1 of the drawings. 13 indicates an oil supply pipe provided witha downward feed extension 13*. 14 indicates an air supply pipe which extends from a hood 14 which is carried suitably and freely over the top of the-furnace. The air pipe is provided with an enlargement 13 The pipe 13 extends into the pipe 14 above its enlargement 13 the portion 13 depending inthe enlargement clear of the sides thereof. The lower portion of the enlargement is provided with a comparatively large orifice 13 .is the oil passes through the pipe 13 and down through the pipe 13 it drops through the enlargement 13 and orifice 13 Cool air is drawn beneath the hood 14 and is warmed by the furnace, the warm air passing through 16*. 16 indicates a contact plate carried by the core and 16 indicates a stem extending from such plate and pivotally connected at its outer end to the valve handle 15*.

16 indicates a stationary abutment. 16 indicates a collar carried by the stem 16 16 indicates a compression spring located between the collar 16. and the abutment 16 17 and 18 indicate two stationary contactpieces forming the terminals for the wires 17*. The wires 17 and 18 lead to the motor terminals 5 and 5 19 indicates a thermostat which is of a type commonly used and which may be regulated to operate at any desired temperature. The thermostat 19' is provided with a stem 19 carrying a contactplate 19. 19 and 19 indicate stationary contacts co-acting with the plate 19' and from which wires 19 and 19 extend to the windings of the solenoid 16 forming a circuit supplied by a suitable source of power 19 The valve arm 15 in the position shown in the drawing is in the closed position or the position it would assume when the temperature of the furnace has been raised to a maximum. If the temperature'of the furnace decreases below a certain point the contact plate 19 is carried into engagement with the plates 19 and 19 thereby closing the circuit through the solenoid 16. By this means the contact plate 16 is carried into engagement with the contacts 17 and 18 closing the circuit of the motor 5 so as to operate the same. Simultaneously the stem 16 is drawn in a corresponding direction thereby carrying the valve handle 15? to the open position allowing oil to feed through the pipe 13. The oil passing through the pipe 13 on to the plate 14 1s atomized and combined with air. This m1xture impinges upon the blades of the revolving fan 6 which breaks the atomized oil up into a fine vapor, throwin suchyapor against the super-heated curved portion 8 of the plate shield 8 thereby igniting and producing a flame which passes through the opening formed at the ends'of the shield into the furnace.

The crossrib 9 prevents the flame being carried forward into the outer portioirof the casing 3, the orifices 3 also preventing the heat effecting the outer portion of such casing.

When the temperature reaches its maxi- 'mum the contact plate 19 drops out of engagement with the contacts 19 and 19 thereby breaking the solenoid circuit allowlng the solenoid core 16 to return to its normal position by means of the compression spring 16 thereby breaking the motor c rcuit formed by the wires 17 and l8 and simultaneously closing the oil supply valve 15.

From this description it will be seen that 1 have devised a very simple form of 011 burner which will thoroughly atomize and then vaporize the oil, which will automat1- cally cut off the oil supply at any predetermined temperature and thereby economize its consumption, which by the thorough mixing of the atomized oil with warm air and its complete atomization by the revolv-.

1. An oil burner comprising a casing adapted to fit in the fire door opening of a furnace, means located withln the casing for vaporizing the oil, a pilot light for igniting the vaporized oil, and means for automat1-- cally regulating the supply of oil by the temperature attained by the furnace.

2. An oil burner comprising a casing adapted to fit the fire door opening of a furnace, and having a front opening, a revolving fan mounted within the casing, means for feeding oil on to the blades of the revolving fan, a motor, driving connection bemesses tween the motor and the tan, a solenoid and solenoid core, a contact plate carried by the core, stationary co-actin contacts, circuit Wires connecting the stationary contacts, a thermostat, an electrical circuit connected to the windings of the Solenoid, and means operated by the thermostat for closing such circuit.

3. An oil burner comprising a casing adapted to fit the fire door opening of a furnace and having a front opening, a revolving fan mounted withing the casing, means for feeding oil on to the blades of the revolving fan, a motor, driving connection between the motor and the fan, a solenoid and solenoid core, an oil supply valve located in the oil supply pipe, 'a resiliently held rod connecting the handle of the valve'tc the solenoid core, a thermostat, an electric circuit connected to the windings of the solenoid, and means operated by the thermostat for opening and closing such circuit;

4. In a device of the class described, a casing adapted'to fit the fire door opening of a furnace and having an opening in its inner wal1,a fan revolubly mounted within the casing, an oil supply pipe adapted to feed oil on to the blades of the fan whereby the oil is vaporized and projected through the opening of the casing wall, and a curved plate carried by such casing against which the oil is projected, and a pilot light for heating such plate.

5. In a device of the class described, a casing havin an opening in the front wall thereof, a i an revolubly mounted within the casing, means for feeding oil on to the blades of the fan whereby such oil is vaporized,-a plate located in front of the casing openin against which the vaporized oil is projecte a pilot light i'or heating such plate, a sheli extending forwardly and forming an extension of the lower wall of the casing and provided with a tapered portion leading to a discharge spout in the inner edge of the feed pipe,

ing having air orifices in the end walls thereof and a front discharge, means for circulating the supply of air passing through such end orifices, a fan revolubly mounted within the casing, means for feeding atomized oilby gravity on to the blades of the fan, a plate located in front opening against which the oil is brought, and means for heating such plate.

'8. In a device of the class described, a casing having air orifices in the end walls thereof and a front discharge opening and air orifices in the bottom wall thereof, means for circulating the sup-ply of air passing through such end orifices and bottom orifices, a fan revolubly mounted within the casing above such bottom orifices, means for supplying 'oil by gravity on to the blades of the fan, a plate located in front of the disoharge opening against which the oil is pro jected, and means for heating such plate.

9. An oil burner comprising a casing adapted to fit the fire door orifice of a furnace, means for feeding and atonnzmg the oil and mixing warm air therewith as it of the discharge passes into the casing, means for vaporizing the Xture within the casing, anda superheated plate against which the mixture is projected.

WILLIAM HENRY LEGG. v

Witnesses M. EGAN, R. MOFFAT. 

